Home / 139,968,165.10-209,952,247.65-78,746,161.90

Finding the Fourth Proportional to 139,968,165.10, 209,952,247.65 and 78,746,161.90

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Solution

The fourth proportional to 139,968,165.10, 209,952,247.65 and 78,746,161.90 is: 118,119,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,165.10 : 209,952,247.65 = 78,746,161.90 : x
  2. Step 2: Convert to fraction form
    139,968,165.10/209,952,247.65 = 78,746,161.90/x
  3. Step 3: Cross multiply
    139,968,165.10x = 209,952,247.65 × 78,746,161.90
  4. Step 4: Simplify right side
    139,968,165.10x = 16,532,933,684,715,796
  5. Step 5: Solve for x
    x = 16,532,933,684,715,796/139,968,165.10
  6. Step 6: Final answer
    x = 118,119,242.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.